The negative reviews do basically mention the same couple of issues over and over. If I were in the market for a vac, which I am not as I got an earlier shark deal, I wouldn’t buy either based on the flaws.
I bought this last year on QVC and it’s been great. Not sure what OP is talking about. The only downside I can think of is that it does get tangled with hair, which can be an issue with pets and long-haired persons in the house, but it’s not difficult to clean. Having two batteries is a BIG plus. Having a lightweight cordless vacuum is basically the only way my husband will ever vacuum around the house, so I give it a big thumbs up.